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Finding the Fourth Proportional to 352,936.39, 529,170.54 and 128,270.13

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Solution

The fourth proportional to 352,936.39, 529,170.54 and 128,270.13 is: 192,320.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,936.39 : 529,170.54 = 128,270.13 : x
  2. Step 2: Convert to fraction form
    352,936.39/529,170.54 = 128,270.13/x
  3. Step 3: Cross multiply
    352,936.39x = 529,170.54 × 128,270.13
  4. Step 4: Simplify right side
    352,936.39x = 67,876,775,551.43
  5. Step 5: Solve for x
    x = 67,876,775,551.43/352,936.39
  6. Step 6: Final answer
    x = 192,320.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.